1 files changed, 37 insertions, 0 deletions
diff --git a/third_party/rust/libloading/src/test_helpers.rs b/third_party/rust/libloading/src/test_helpers.rs
new file mode 100644
index 0000000000..9e3e9924ff
--- /dev/null
+++ b/third_party/rust/libloading/src/test_helpers.rs
@@ -0,0 +1,37 @@
+//! This is a separate file containing helpers for tests of this library. It is built into a
+//! dynamic library by the build.rs script.
+#![crate_type="cdylib"]
+
+#[no_mangle]
+pub static mut TEST_STATIC_U32: u32 = 0;
+
+#[no_mangle]
+pub static mut TEST_STATIC_PTR: *mut () = 0 as *mut _;
+
+#[no_mangle]
+pub extern "C" fn test_identity_u32(x: u32) -> u32 {
+    x
+}
+
+#[repr(C)]
+pub struct S {
+    a: u64,
+    b: u32,
+    c: u16,
+    d: u8
+}
+
+#[no_mangle]
+pub extern "C" fn test_identity_struct(x: S) -> S {
+    x
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn test_get_static_u32() -> u32 {
+    TEST_STATIC_U32
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn test_check_static_ptr() -> bool {
+    TEST_STATIC_PTR == (&mut TEST_STATIC_PTR as *mut *mut _ as *mut _)
+}